Improvement in metallic shutters



F. F. FLETCHER.

Metallic-Shutters. N0.l57,5 05. Patented Dec. 8,1874.

WITNESSES: {IVENTUM ATTORNEYS.

THE GRAPHIC co,PHd-r0-u1 u.asa4l PARK Fucsmxl UNITED STATES PATENT OE IoE.

FISHER F. FLETCHER, OF SIOUX CITY, IOWA.

IMPROVEMENT IN METALLIC SHUTTERS.

Specification forming part of Letters Patent No. 157,505, dated December 8, 1874; application filed June 13, 1874.

To all whom it may concern:

Be it known that I, FISHER F. FLETCHER, of Sioux (Jityand county, in the Stateof Iowa, have invented an Improved Fire-Proof Shutter, "of which the following is a specification:

Figure 1 of drawing is a front elevation, and Fig. 2 a cross-section.

The invention contemplates the manufacture of a single-sheet shutter, paneled and braced so as to possess the necessary strength with only a Weight of about seventy-five pounds.

I re-enforce a continuous sheet, A, on the margin or edges by riveted strips B, and brace the middle by the raised panel C.

FISHER F. FLETCHER.

Witnesses:

JAMES M. BACON, H. A. DWIGHT. I 

